/* ===== 零号工坊 · 科技风官网样式 ===== */
:root {
  --bg: #060912;
  --bg-2: #0a0f1e;
  --panel: rgba(16, 24, 44, 0.55);
  --panel-solid: #0d1528;
  --border: rgba(0, 229, 255, 0.16);
  --border-strong: rgba(0, 229, 255, 0.4);
  --cyan: #00e5ff;
  --purple: #7b5cff;
  --pink: #ff4d9d;
  --text: #e8f1ff;
  --muted: #8a9bbf;
  --glow: 0 0 24px rgba(0, 229, 255, 0.35);
  --radius: 14px;
  --maxw: 1180px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

/* 背景网格 + 光晕 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
  z-index: -2;
}
body::after {
  content: "";
  position: fixed;
  top: -20%;
  left: 50%;
  width: 900px;
  height: 900px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(0, 229, 255, 0.12), transparent 60%);
  z-index: -1;
  pointer-events: none;
}

a { color: inherit; text-decoration: none; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ===== 导航栏 ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(6, 9, 18, 0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo { display: flex; align-items: center; }
.logo img { height: 40px; width: auto; display: block; border-radius: 6px; }

.nav-links { display: flex; gap: 8px; align-items: center; }
.nav-links a {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 15px;
  color: var(--muted);
  transition: all .25s ease;
}
.nav-links a:hover { color: var(--text); background: rgba(0, 229, 255, 0.08); }
.nav-links a.active {
  color: #060912;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  font-weight: 700;
  box-shadow: var(--glow);
}

.menu-btn {
  display: none;
  background: none; border: 1px solid var(--border);
  color: var(--text); width: 42px; height: 38px;
  border-radius: 9px; font-size: 18px; cursor: pointer;
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 68px;
  position: relative;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  width: 100%;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--cyan);
  border: 1px solid var(--border);
  background: rgba(0, 229, 255, 0.06);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.eyebrow::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan); box-shadow: var(--glow);
  animation: pulse 1.6s infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.3} }

.hero h1 {
  font-size: clamp(38px, 5.4vw, 68px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.hero h1 .grad {
  background: linear-gradient(120deg, var(--cyan), var(--purple) 60%, var(--pink));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .sub {
  font-size: 18px;
  color: var(--muted);
  max-width: 520px;
  margin-bottom: 32px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s;
  border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: #060912;
  box-shadow: var(--glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 34px rgba(0,229,255,.5); }
.btn-ghost {
  border-color: var(--border-strong);
  color: var(--text);
  background: rgba(255,255,255,0.02);
}
.btn-ghost:hover { background: rgba(0,229,255,0.08); transform: translateY(-2px); }

.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: 20px;
  border: 1px solid var(--border);
  background:
    radial-gradient(circle at 30% 30%, rgba(123,92,255,.25), transparent 55%),
    radial-gradient(circle at 75% 70%, rgba(0,229,255,.22), transparent 55%),
    var(--panel-solid);
  overflow: hidden;
  display: grid;
  place-items: center;
}
.hero-visual .ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
}
.hero-visual .r1 { width: 70%; height: 70%; animation: spin 14s linear infinite; }
.hero-visual .r2 { width: 48%; height: 48%; border-style: dashed; animation: spin 9s linear infinite reverse; }
.hero-visual .core {
  width: 120px; height: 120px;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  display: grid; place-items: center;
  font-size: 46px; font-weight: 900; color: #060912;
  box-shadow: 0 0 50px rgba(0,229,255,.6);
}
.hero-logo {
  width: 92%;
  max-width: 440px;
  height: auto;
  display: block;
  border-radius: 14px;
  filter: drop-shadow(0 0 28px rgba(0, 229, 255, 0.35));
  animation: floaty 6s ease-in-out infinite;
}
@keyframes floaty {
  0%,100% { transform: translateY(0); }
  50%     { transform: translateY(-8px); }
}
@keyframes spin { to { transform: rotate(360deg); } }

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 56px;
}
.stat {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  background: var(--panel);
  backdrop-filter: blur(8px);
}
.stat .num {
  font-size: 30px; font-weight: 800;
  background: linear-gradient(120deg, var(--cyan), var(--purple));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat .lbl { color: var(--muted); font-size: 13px; margin-top: 4px; }

/* ===== 通用区块 ===== */
.section { padding: 96px 0; }
.section-head { text-align: center; margin-bottom: 54px; }
.section-head .tag {
  font-size: 13px; letter-spacing: 3px; color: var(--cyan); font-weight: 700;
}
.section-head h2 {
  font-size: clamp(28px, 3.6vw, 42px); font-weight: 800; margin: 10px 0 12px;
}
.section-head p { color: var(--muted); max-width: 620px; margin: 0 auto; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  background: var(--panel);
  backdrop-filter: blur(8px);
  transition: transform .25s, border-color .25s, box-shadow .25s;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(400px circle at var(--mx,50%) var(--my,50%), rgba(0,229,255,.1), transparent 40%);
  opacity: 0; transition: opacity .3s;
}
.card:hover { transform: translateY(-6px); border-color: var(--border-strong); box-shadow: 0 18px 40px rgba(0,0,0,.4); }
.card:hover::before { opacity: 1; }
.card .ico {
  width: 52px; height: 52px; border-radius: 13px;
  background: rgba(0,229,255,.1); border: 1px solid var(--border);
  display: grid; place-items: center; font-size: 24px; margin-bottom: 18px;
}
.card h3 { font-size: 20px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }

/* ===== 关于我们 ===== */
.about-split {
  display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center;
}
.about-text h2 { font-size: clamp(28px, 3.4vw, 40px); margin-bottom: 18px; font-weight: 800; }
.about-text p { color: var(--muted); margin-bottom: 16px; }
.value-list { list-style: none; margin-top: 22px; display: grid; gap: 14px; }
.value-list li {
  display: flex; gap: 14px; align-items: flex-start;
  border: 1px solid var(--border); border-radius: 12px; padding: 16px;
  background: var(--panel);
}
.value-list .v-ico {
  flex: 0 0 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  display: grid; place-items: center; color: #060912; font-weight: 900;
}
.value-list h4 { font-size: 16px; margin-bottom: 2px; }
.value-list span { color: var(--muted); font-size: 14px; }

.about-visual {
  border: 1px solid var(--border); border-radius: 20px; padding: 34px;
  background: linear-gradient(160deg, rgba(123,92,255,.12), rgba(0,229,255,.06));
}
.about-visual .big { font-size: 56px; font-weight: 900; }
.about-visual .big .grad {
  background: linear-gradient(120deg, var(--cyan), var(--purple));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.about-visual .line { display: flex; justify-content: space-between; padding: 14px 0; border-bottom: 1px dashed var(--border); }
.about-visual .line:last-child { border-bottom: none; }
.about-visual .line span { color: var(--muted); }
.about-visual .line b { color: var(--text); }

/* ===== 产品服务（敬请期待）===== */
.coming {
  text-align: center;
  border: 1px dashed var(--border-strong);
  border-radius: 20px;
  padding: 70px 30px;
  background: var(--panel);
  max-width: 720px;
  margin: 0 auto;
}
.coming .badge {
  display: inline-block; padding: 8px 18px; border-radius: 999px;
  border: 1px solid var(--border-strong); color: var(--cyan);
  font-size: 13px; letter-spacing: 2px; margin-bottom: 22px;
}
.coming h2 { font-size: 34px; font-weight: 800; margin-bottom: 14px; }
.coming p { color: var(--muted); max-width: 520px; margin: 0 auto 30px; }
.soon-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 8px;
}
.soon-item {
  border: 1px solid var(--border); border-radius: 12px; padding: 22px 14px;
  background: rgba(255,255,255,.02); opacity: .85;
}
.soon-item .ph { font-size: 26px; margin-bottom: 8px; }
.soon-item .t { font-weight: 700; font-size: 15px; }
.soon-item .s { color: var(--muted); font-size: 13px; }

/* ===== 联系我们 ===== */
.contact-wrap {
  display: grid; grid-template-columns: 1fr 1fr; gap: 30px;
}
.contact-card {
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 34px; background: var(--panel); backdrop-filter: blur(8px);
}
.contact-card h3 { font-size: 22px; margin-bottom: 18px; }
.contact-row {
  display: flex; align-items: center; gap: 16px; padding: 16px 0;
  border-bottom: 1px dashed var(--border);
}
.contact-row:last-child { border-bottom: none; }
.contact-row .c-ico {
  flex: 0 0 46px; height: 46px; border-radius: 12px;
  background: rgba(0,229,255,.1); border: 1px solid var(--border);
  display: grid; place-items: center; font-size: 20px;
}
.contact-row .c-lbl { color: var(--muted); font-size: 13px; }
.contact-row .c-val { font-size: 16px; font-weight: 600; }
.contact-row .c-val a { color: var(--cyan); }

.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 14px; color: var(--muted); margin-bottom: 7px; }
.form-row input, .form-row textarea {
  width: 100%; padding: 12px 14px; border-radius: 10px;
  background: rgba(255,255,255,.03); border: 1px solid var(--border);
  color: var(--text); font-size: 15px; font-family: inherit;
}
.form-row input:focus, .form-row textarea:focus { outline: none; border-color: var(--border-strong); box-shadow: var(--glow); }
.form-row textarea { resize: vertical; min-height: 110px; }
.note { font-size: 13px; color: var(--muted); margin-top: 4px; }

/* ===== 页脚 ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0 30px;
  background: rgba(6,9,18,.7);
  margin-top: 40px;
}
.footer-inner {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 16px;
}
.footer .copy { color: var(--muted); font-size: 14px; }
.footer .links { display: flex; gap: 18px; }
.footer .links a { color: var(--muted); font-size: 14px; }
.footer .links a:hover { color: var(--cyan); }

/* ===== 滚动出现动画 ===== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s, transform .7s; }
.reveal.show { opacity: 1; transform: none; }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-visual { order: -1; max-width: 360px; margin: 0 auto; }
  .hero-actions { justify-content: center; }
  .about-split, .contact-wrap { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .soon-grid { grid-template-columns: 1fr; }
  .nav-links {
    position: fixed; top: 68px; right: 0; left: 0;
    flex-direction: column; gap: 4px; padding: 16px 24px;
    background: rgba(6,9,18,.96); backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    transform: translateY(-130%); transition: transform .3s; align-items: stretch;
  }
  .nav-links.open { transform: none; }
  .nav-links a { text-align: center; }
  .menu-btn { display: block; }
}

/* ===== 注册页：密码强度 + 规则提示 ===== */
.reg-card {
  width: min(460px, 100%);
  background: rgba(13,21,40,.7);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 36px 32px;
  box-shadow: 0 24px 70px rgba(0,0,0,.4);
  backdrop-filter: blur(10px);
}
.reg-card h1 { font-size: 26px; font-weight: 700; margin-bottom: 6px; }
.reg-card .sub { font-size: 13px; color: var(--muted); margin-bottom: 26px; }
.reg-section { padding-top: 140px; }

.strength { display: flex; align-items: center; gap: 10px; margin-top: 8px; }
.strength .bars { display: flex; gap: 4px; flex: 1; }
.strength .seg {
  flex: 1; height: 5px; border-radius: 3px;
  background: rgba(255,255,255,.08); transition: background .2s;
}
.strength .lbl { font-size: 12px; color: var(--muted); min-width: 56px; text-align: right; }
/* 等级配色 */
.strength.lv0 .seg { background: rgba(255,255,255,.08); }
.strength.lv1 .seg:nth-child(1) { background: #ff5b5b; }
.strength.lv2 .seg:nth-child(-n+2) { background: #ffb347; }
.strength.lv3 .seg:nth-child(-n+3) { background: #38d6ff; }
.strength.lv4 .seg:nth-child(-n+4) { background: linear-gradient(90deg, #38d6ff, #7b5cff); }
.strength.lv1 .lbl { color: #ff5b5b; }
.strength.lv2 .lbl { color: #ffb347; }
.strength.lv3 .lbl { color: #38d6ff; }
.strength.lv4 .lbl { color: #b388ff; }

.policy { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 14px; margin-top: 12px; font-size: 12px; color: var(--muted); }
.policy .ok { color: #38d6ff; }
.policy .no { color: var(--muted); }
.policy .ok::before { content: "✓ "; }
.policy .no::before { content: "○ "; }

.guest-link {
  display: block; text-align: center; margin-top: 18px;
  font-size: 13px; color: var(--muted);
}
.guest-link a { color: var(--cyan); text-decoration: none; }
.guest-link a:hover { text-decoration: underline; }

@media (max-width:520px){
  .policy { grid-template-columns: 1fr; }
}